Dave Davies looks back to analyze some of blog and video posts from Google's Matt Cutts to gain a better understanding of where Google has been and get a sense of where the company will go next. The year-by-year journey ends in 2014 -- when he took leave, and has yet to return. His impact on the industry, chronicled in these posts, also provides a look at his passion for the technology.

There are plenty of questions that marketers should ask when auditing campaigns. Rand Fishkin provides marketers with the five questions that he thinks are the most important in formulating an SEO strategy. These include what keywords do you want to rank, how to get links, how to make sure mobile sites have speed, how to approach Penguin and Panda algorithms, and what's the best way to get the money needed to do the job. Check out the comments. Others throw in their five tips as well.

Apple, Facebook, and Google lack in the use of social media, trailing behind companies like Cisco System, Hewlett-Packard, which ranked No. 1 and No. 2, respectively, In a review of more than 500 major companies conducted by Investis, Apple ranked No. 416; Facebook, No. 242; and Google, 62. The Investis IQ review analyzed companies to score their use of eight leading social media channels including Facebook, LinkedIn, Twitter and YouTube. Researchers assessed more than 250,000 data points to rank companies across a number of areas including the range of content published, success in attracting an audience; and engagement with followers.